Chih-Yuan Chang@dr_changFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencedr_chang has not updated employment details yet.Educationdr_chang has not updated education details yet.LinksLinkedinNmrrAT1raKokSjYXIKgCW+b4Zc79laN0nUerX4MYXK0= Skillsdr_chang has not updated skills details yet.